The analysis of the reasons for insignificant spread air heat pumps in countries with a cold winter period is carried out. Problems arising exchanger outdoor unit pump during operation heating mode are indicated. existing methods anti-icing units considered, and their effectiveness demonstrated, taking into account cost electricity problem utilizing condensate. possibility removing ice from eva...

Adhesive bonding, mechanical fastening, and snap-fit are all ways for attaching plastic components together. Snap-fit is employed to assemble parts because it an efficient, cost-effective, fast joining technique. When comes snap-fits, you have two options: separable inseparable. The term refers the ability of be dismantled successfully without breaking, whereas inseparable being permanently att...

This paper deals with modeling and simulation of sparking occurrence in fastening assemblies. The principle consists to calculate in three dimensions the distributions of current density and temperature in the structure over time, and to derive some physical criteria to estimate the possibility of sparking occurrence. Simulations are performed with a Finite Volume Method in time domain and an u...

Thermoelectric generators (TEGs) are now capable of powering the abundant low power electronics from very small (just a few degrees Celsius) temperature gradients. This factor along with the continuously lowering cost and size of TEGs, has contributed to the growing number of miniaturized battery-free sensor modules powered by TEGs. In this article, we present the design of an ambient-powered w...

The design features of threaded connections with irregular geometry the turns various sections landing end fastening self-tapping part are considered. modification profiles to create holding stresses in contact part-body presented. possible technical properties such compounds analyzed

The performances of the synchronous reluctance motor are essentially dependent on the magnetic dissymetry of the machine, respectively of its rotor, as in [1], [2], [3], [4], [5], [6]. The last one is made from grain-oriented steel laminations, alternating with insulation and non-magnetic material. The fastening is realized with clamping plates and screws made from non-magnetic material (brass ...